H01M 4/8892
Impregnation or coating of the catalyst layer
Official title: {Impregnation or coating of the catalyst layer, e.g. by an ionomer}
H01M4/8892 (Impregnation or coating of the catalyst layer) appears on 186 US grants and 258 published applications in this corpus.
Search patents in H01M- Granted patents
- 186
- Published applications
- 258
- Assignees
- 151
- Inventors
- 693
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 5 |
| 2003 | 4 | 2 |
| 2004 | 1 | 7 |
| 2005 | 3 | 7 |
| 2006 | 3 | 12 |
| 2007 | 2 | 7 |
| 2008 | 2 | 6 |
| 2009 | 2 | 14 |
| 2010 | 5 | 13 |
| 2011 | 4 | 21 |
| 2012 | 6 | 14 |
| 2013 | 8 | 14 |
| 2014 | 11 | 9 |
| 2015 | 11 | 8 |
| 2016 | 8 | 8 |
| 2017 | 12 | 9 |
| 2018 | 10 | 5 |
| 2019 | 6 | 10 |
| 2020 | 7 | 19 |
| 2021 | 2 | 18 |
| 2022 | 19 | 13 |
| 2023 | 15 | 15 |
| 2024 | 15 | 12 |
| 2025 | 10 | 4 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High-temperature PEMFC including polymer of intrinsic microporosity preventing phosphoric acid poisoning and method of manufacturing the same7 Jul 2026US 12,676,330 B2Hyundai Motor Company
- Electrochemical membrane17 Mar 2026US 12,580,214 B2W. L. Gore & Associates, Inc.
- Electrochemical membrane26 Aug 2025US 12,401,049 B2W. L. Gore & Associates, Inc.
- Stabilized catalyst layers via controlled cracking12 Aug 2025US 12,388,092 B2Robert Bosch GmbH
- Ionomer components comprising selectively deposited catalysts and methods of making and using the same29 Jul 2025US 12,374,698 B1Triad National Security, LLC
- Method for manufacturing electrode, method for manufacturing membrane electrode assembly, and method for inspecting electrode10 Sep 2026US 2026/0269277 A1Honda Motor Co., Ltd.
- Fuel cell catalyst, method for manufacturing same, and fuel cell comprising same18 Jun 2026US 2026/0171430 A1Kolon Industries, Inc.
- Catalyst11 Jun 2026US 2026/0163017 A1Johnson Matthey Hydrogen Technologies Limited
- Electrochemical membrane7 May 2026US 2026/0128339 A1W. L. Gore & Associates, Inc.
- Electrochemical membrane22 Jan 2026US 2026/0024783 A1W. L. Gore & Associates, Inc.
Most cited
By later US patents
- Electrode assembly for use in a solid polymer electrolyte fuel cell163US 4,876,115 AUnited States Department of Energy · 1989
- Porous electrode for electrode assemblies in a fuel cell56US 5,501,915 AJohnson Matthey Public Limited Company · 1996
- Coated porous substrate formation by solution coating45US 4,470,859 ADiamond Shamrock Chemicals Company · 1984
- Electrocatalytic structure41US 5,518,831 AThe Dow Chemical Company · 1996
- Impregnation of microporous electrocatalyst particles for improving performance in an electrochemical fuel cell36US 6,074,773 ABallard Power Systems Inc. · 2000